Radeon HD 4870 DDR4

Specifications of the ATI Radeon HD 4870 DDR4 GPU

Name / Brand / Architecture
Manufacturer:	ATI
Model:	Radeon HD 4870 DDR4
Reference card?:	Yes
Target market segment:	Desktop
Die name:	RV770 XT
Architecture:	Unified Superscalar Shader Architecture
Fabrication process:	55 nm
Transistors:	956 million
Bus interface:	PCI-E 2.0 x 16
Launch date:	June 2008
Frequency
Graphics clock:	750 MHz
Memory specifications
Memory type:	GDDR4
Memory clock:	900 MHz
Memory interface width:	**-bit
Cores / Texture
Color ROPs:	16
Stream processors:	800
Texture units:	40
Texture fetches / clock cycle:	Up to 160
Textures/pixel:	Up to 128
RAMDACs:	400 MHz
Decoders:	DivX H.2** MPEG 1 MPEG-2 VC-1
SLI / Crossfire
Maximum crossfire options:	4-way
Electric characteristics
Maximum power draw:	150 W
Video features
Multi-monitor:	Up to 2 displays
Maximum digital resolution:	**0 x 1600
Maximum DVI resolution:	**0 x 1600
Maximum VGA resolution:	2048 x 1536
Anti-Aliasing technologies:	24 x CFAA 8 x MSAA Adaptive MSAA & SSAA
HDMI:	Yes
HDMI version:	1.3
Performance
Pixel fill rate:	12 Gigapixels/s
Texture fill rate:	30 Gigatexels/s
Single presision compute power:	1200 GFLOPS
Double precision compute power:	240 GFLOPS
External connectors
Standard display connectors:	2 x Dual-Link DVI DisplayPort HDMI
Power connectors:	2 x 6-pin
Audio input for HDMI:	Yes
Dimensions
Width:	Dual-Slot
Other features / Support
Other features:	ATI/AMD PowerPlay HDCP High Dynamic Range (HDR) Support
Open CL support:	1.0
OpenGL support:	3.3
DirectX support:	10.1
Shader model:	4.1
Windows driver support:	Windows 7 Windows Vista Windows XP